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选育新恢复系是育成新的强优组合最迅速的途径,探明恢复系主要性状的遗传规律,将会促进新恢复系、新强优组合的选育工作。本研究的目的就是通过估算广义遗传力、遗传相关、杂种优势和通径系数,了解恢复系的遗传规律,为选育新恢复系配制强优组合和预测杂种优势提供依据。材料与方法选用近年大面积推广和南方杂交稻区试、本地区区试表现较突出的杂交水稻组合11个,
Breeding new restorer lines is the fastest way to cultivate new strong combination, and the genetic law of the main characters of restorer lines is proved, which will promote the breeding of new restorer line and new strong combination. The purpose of this study is to understand the genetic rules of restorer lines by estimating generalized heritability, genetic correlation, heterosis and path coefficient, and to provide evidence for the establishment of strong combination and prediction of heterosis for new restorer lines. MATERIALS AND METHODS Selection of large-scale popularization in southern China and southern hybrid rice area trial, 11 regional hybrid rice combinations with outstanding performance in regional trials,